Financial terms were not announced, but Microsoft will use the acquisition to help it build “the world’s preeminent mixed reality community,” Alex Kipman, Microsoft’s inventor of the HoloLens, said, according to The Verge.

“These first few months will focus on fostering our community and making sure AltspaceVR remains a friendly, welcoming and vibrant place to hang out in virtual reality,” Microsoft told the online pub, adding that AltspaceVR will continue to work on several platforms, including 2D mode on PCs and Macs and on the HTC Vive, Oculus Rift, Daydream (Google), and Samsung Gear VR.

In an email to registered users, AltspaceVR said that “AltspaceVR will stay AltspaceVR,” but noted that Microsoft will now manage all user-created accounts.

Earlier this year, AltspaceVR said about 35,000 people used its platform every month.

Founded in 2013, AltspaceVR has raised about $15.7 million, including a $10.3 million Series A round in 2015 that included participation from Comcast Ventures, Tencent, Dolby Family Ventures and Promus Ventures, among others.